Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
Permanent URI for this collectionhttps://hdl.handle.net/11147/7148
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Article Citation - WoS: 1Citation - Scopus: 1Properties of Roman Structural Mortars in the Province of Asia (turkey)(Elsevier Sci Ltd, 2025) Tasci, Burcu; Boke, HasanIn this study, the properties of Roman structural mortars composed of lime and natural aggregates from twentythree archaeological sites in Western Anatolia were determined in order to understand whether there was a common production technology of lime mortars in the Roman Empire by making a comparison between Europe and Western Anatolia. Their basic physical and mechanical properties, raw material compositions, microstructural and hydraulic properties, mineralogical and chemical compositions of their lime binder and fine aggregates were identified by X-ray diffraction, Fourier transform infrared spectroscopy, scanning electron microscopy coupled with energy dispersive spectroscopy, thermal gravimetric analysis analyses, bulk density, total porosity and compressive strength of mortars. The results indicated that these mortars mortars were produced by combining fat or lean lime with coarse aggregates (quartz, tuff) and predominantly fine pozzolanic rhyolitic and dacitic tuff aggregates. The lime/aggregate ratios of the mortars generally exhibited a range of values between 1:4 and 1.5:1 by weight, which closely paralleled the lime/aggregate ratios in other Roman mortars published in literature. The presence of lime lumps within the mortar matrices, exhibiting a spongy texture, may suggest the use of the hot lime mixing method in the preparation of the mortars. The mortars are hydraulic, possessing compressive strengths comparable to those observed in natural hydraulic lime mortars (NHL2, NHL3.5 and NHL5 types). The results indicate that the production of structural mortars in the province of Asia was similar to that in other regions of the Roman Empire, although the raw materials are similar, small differences in raw material composition could be due to the use of local raw material sources. This may be evidence of a common lime mortar technology that deliberately used pozzolanic aggregates with almost pure lime throughout the Roman Empire.Article Citation - Scopus: 3Characteristics of Byzantine-Period Lime Mortars and Plasters From the Anaia Church (kadikalesi)(Institute of Metals Technology, Ljubljana, 2022) Işık, Tuğçe; Uğurlu Sağın, ElifIn this study, Byzantine- period lime mortars and plasters used in the Anaia Church in Ku degrees adasy- Aydyn were examined in order to determine their characteristics and investigate the continuity of the lime mortar technology through centuries in the Anaia Church. The results will also contribute to future conservation studies at the site. Basic physical properties, raw-material compositions and hydraulic properties of lime mortars and plasters; mineralogical and chemical compositions, microstructural properties of binders, aggregates and limes; and pozzolanic activities of aggregates were determined using RILEM test methods, XRD, SEM-EDS and TGA. Mortar samples were comprised of natural aggregates whereas lime plasters were made of brick aggregates. Analyses revealed that plasters were slightly less dense and more porous than mortars due to the porous structure of the brick aggregates. All mortars and plasters were hydraulic due to the use of highly reactive pozzolanic aggregates. The basic physical properties, raw-material compositions, mineralogical and chemical compositions of mortars and plasters were found to be similar throughout the construction periods spread over different centuries. These similarities revealed the conscious knowledge of the lime mortar technology during the Byzantine period in Western Anatolia.Article Citation - WoS: 20Citation - Scopus: 23Opal-A Rich Additives Used in Ancient Lime Mortars(Elsevier Ltd., 2006) Tunçoku, Selim Sarp; Caner Saltık, Emine N.Ancient stone and brick masonry mortars from three monuments in Konya, Central Anatolia dated to the Anatolian Selçuk Period (12th and 13th centuries AD) were examined for their raw material composition and durability characteristics to understand some characteristics of medieval mortar technology. Optical microscopy, XRD, SEM, EDX, FTIR and TGA analyses revealed that the mortars contained high percentage of lime binder totally carbonated into micritic calcite. Coarse and medium aggregates were mainly composed of sandstone and metamorphic rock fragments, quartz, feldspar and mica minerals. Opal-A was found in considerable amounts in the fine aggregates, likely not derived from the coarser ones but added separately. Pozzolanic activity of the fine aggregates was determined by conductometric measurements. Their ability to form C-S-H was observed by treating them with saturated Ca(OH)2 solution. Bulk density and total porosity measurements showed that the mortars were highly porous due to the use of high amount of lime. On the other hand, they possessed sufficient mechanical strength. Mechanical properties were determined by point load tests and ultrasonic pulse velocity measurements. They were expressed as uniaxial compressive strength (UCS) and modulus of elasticity (Emod) in MPa. The results were also discussed in terms of durability characteristics of the mortars. They were expressed with the use of uniaxial compressive strengths in dry and wet states, and total porosity values. The mortars were considered to have high durability to wetting and drying cycles but had poor durability to the crystallization of water-soluble salts.Conference Object Citation - WoS: 7Citation - Scopus: 7Investigation of the Pozzolanic Properties of Bricks Used in Horasan Mortars and Plasters in Historic Buildings(Trans Tech Publications, 2004) Böke, Hasan; Akkurt, Sedat; İpekoğlu, BaşakCrushed brick used in historic brick-lime mortars and plasters (Horasan) were characterized for understanding their properties to develop intervention mortars for conservation. Brick powders were separated from original mortars and plasters, and analyzed by XRD, SEM-EDS, TGA and pozzolanic activity (PA) measurements. The results showed that the microstructures of brick powders were not completely vitrified, and their XRD analysis failed to show the peaks for high temperature (T>900°C) phases. PA measurements of all brick powders showed an ample amount of artificial pozzolan property. Consequently, brick powders aimed for conservation of historic mortars must have high clay contents in addition to being low-fired (T<900°C) in order to produce maximum conversion into amorphous phase for ideal PA values.